The net effect is that we're making 12V from the gpio, which means all the LED
current and switcher inefficiency is coming as current through that gpio. The
-measured LED current is around 7mA, so this is "safe" for the SOC, but really
-not a great plan...
+measured LED current is around 7mA, so this is "safe" for the SOC, but leaves
+less engineering margin than we usually like.
+
+Changing the circuit to be powered from v_lipo with the gpio hooked to shdn*
+and controlling a FET switch on the output might be smarter someday?
+
+2019.12.09
+- what gets through-hole soldered on to a v2.1 board (sans optics)
+
+ 6-pin micromatch with locking ears
+ 2 * 9-pin screw terminal strips
+ 5x1 100mil straight header
+ beeper
+ LiPo connector
+ edge-launched SMA
+ 2x1 100mil right-angle header
-Need to redesign this in the future to use a transistor/FET switch.